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Piggybank
A self-hosted virtual piggybank that teaches kids compound interest — your data, your server, no subscriptions.
The open-source foundation that Penny is built on. Piggybank is a self-hosted family finance app — same compound interest teaching concept, but you own the infrastructure.
Deploy with a single docker-compose up. All data lives in one SQLite file. Multi-account support so each kid gets their own ledger with configurable interest rates, compounding periods, and transaction categories. No cloud dependency, no subscriptions, no data leaving your network.
MIT licensed. Designed for parents who want full control over their family’s financial education tools.